debonding of fg on oe plastic trim

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#1

Hi all, firstly introduce myself: Based in Bath in the UK, have worked with fg for some time now, fabricating various automotive pieces along the lines of performance/ICE/aesthetic.

I’m coming to completion on fabricating a twin A-pillar pod. The pod is fg, is one unit which bolts (hidden) to the oe A-pillar trim. To blend in the pod around its edge to the A-pillar trim I have laid down fg. However, now that its cured its quite easy to de-bond the fg from the oe plastic trim with a simple twist of the piece. Its something I was half expecting as I’ve had it on other pieces. But here the flexibility of the A-pillar trim does mean that its more likely to crack the final paint too.

How do you get round this? Must be the same as when overlaying cf onto oe trim, how do you ensure a good bond if you suspect the resin won’t adhere?

I heavily scabbled the surface too and still didn’t help.

#2

The part is probally a PE or PP plastics and nothing will stick to it…unless you drill lots of little holes for the resin to drip thru and make a rivet type locking force.

#3

but lots of people do cf overlays on auto trim parts and a lot of these are typical poly plastics.

I guess you don’t notice it if a full cf overlay peels away from trim…

Think I may need to replicate whole oe trim section in fg :frowning:

#4

But that’s what they do…drill lots of little holes that you don’t see on the outside finish side on an over lay of a stock plastics panel with the stock attachement clips on the inside.